{  Statement: http://acmp.ru/?main=task&id_task=233
   Verdict: Accepted
}
uses
    SysUtils, Math;

var
    i,n,k:longint;

begin
reset(input,'input.txt');
rewrite(output,'output.txt');
read(n);
for i:=1 to n do begin
    read(k);
    if k < 438 then begin
        write('Crash ',i);
        halt(0);
    end;
end;
write('No crash');
end.